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cluster_store.go
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cluster_store.go
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package crds
import (
"context"
"time"
"github.com/rancher/opni/apis/v1beta2"
"github.com/rancher/opni/pkg/core"
"github.com/rancher/opni/pkg/storage"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/util/retry"
"sigs.k8s.io/controller-runtime/pkg/client"
)
var (
defaultBackoff = wait.Backoff{
Steps: 20,
Duration: 10 * time.Millisecond,
Cap: 1 * time.Second,
Factor: 1.5,
Jitter: 0.1,
}
)
func (c *CRDStore) CreateCluster(ctx context.Context, cluster *core.Cluster) error {
return c.client.Create(ctx, &v1beta2.Cluster{
ObjectMeta: metav1.ObjectMeta{
Name: cluster.Id,
Namespace: c.namespace,
Labels: cluster.GetMetadata().GetLabels(),
},
Spec: cluster,
})
}
func (c *CRDStore) DeleteCluster(ctx context.Context, ref *core.Reference) error {
return c.client.Delete(ctx, &v1beta2.Cluster{
ObjectMeta: metav1.ObjectMeta{
Name: ref.Id,
Namespace: c.namespace,
},
})
}
func (c *CRDStore) GetCluster(ctx context.Context, ref *core.Reference) (*core.Cluster, error) {
cluster := &v1beta2.Cluster{}
err := c.client.Get(ctx, client.ObjectKey{
Name: ref.Id,
Namespace: c.namespace,
}, cluster)
if err != nil {
if k8serrors.IsNotFound(err) {
return nil, storage.ErrNotFound
}
return nil, err
}
return cluster.Spec, nil
}
func (c *CRDStore) UpdateCluster(ctx context.Context, ref *core.Reference, mutator storage.MutatorFunc[*core.Cluster]) (*core.Cluster, error) {
var cluster *core.Cluster
err := retry.OnError(defaultBackoff, k8serrors.IsConflict, func() error {
existing := &v1beta2.Cluster{}
err := c.client.Get(ctx, client.ObjectKey{
Name: ref.Id,
Namespace: c.namespace,
}, existing)
if err != nil {
return err
}
clone := existing.DeepCopy()
mutator(clone.Spec)
cluster = clone.Spec
return c.client.Update(ctx, clone)
})
if err != nil {
if k8serrors.IsNotFound(err) {
return nil, storage.ErrNotFound
}
return nil, err
}
return cluster, nil
}
func (c *CRDStore) ListClusters(ctx context.Context, matchLabels *core.LabelSelector, matchOptions core.MatchOptions) (*core.ClusterList, error) {
list := &v1beta2.ClusterList{}
err := c.client.List(ctx, list, client.InNamespace(c.namespace))
if err != nil {
return nil, err
}
selectorPredicate := storage.ClusterSelector{
LabelSelector: matchLabels,
MatchOptions: matchOptions,
}.Predicate()
clusters := &core.ClusterList{
Items: make([]*core.Cluster, 0, len(list.Items)),
}
for _, item := range list.Items {
if selectorPredicate(item.Spec) {
clusters.Items = append(clusters.Items, item.Spec)
}
}
return clusters, nil
}